for x in ("abcder"):
    print(x)

a = 1
while a <= 5:
    print(a)
    a += 1 #==> a=a+1

print("============")
for a in(range(1,11,1)):
    print(a)
    if a == 7:
        break

print("---------")
for a in range(1,11):
    if a:
        print(a)



print("--------")
for a in range(1,11):
    if a == 7:
        continue
        print(a)


